I used a recipe from JoyofBaking.com. For this batch I just made 3 small 4oz jars, just to test the taste and consistency of the finished product. The jars just pinged, so I know they are sealed, but I'll wait until morning to open one up and see the results. I used bottled lemon juice from Safeway for this recipe, just to see what kind of flavor it would produce. The remainder at the bottom of the bowl was tasty, but a bit light in flavor. I might have to use fresh-squeezed lemon juice for the next batch.
Here's the basic recipe:
3 large eggs
1/3 cup of lemon juice
3/4 cup of sugar
1 tablespoon of lemon zest
4 tablespoons of unsalted butter
I mixed the eggs, lemon juice and sugar with a wire wisk in the top of a double boiler over simmering water. Within 6 minutes the mixture was thick and I tried to put it through a sieve, but gave up and decided that it was smooth enough. Into the bowl with the lemon mixture I mixed the butter and the lemon zest. Once all the butter was incorporated, I put it into sterilized canning jars and placed it into the boiling water bath for 15 minutes. (I live at about 1400 feet above sea level.)
Note: there are instructions on the NCHFP site about how to safely can lemon curd. A critical piece of this is using bottled lemon juice. I did that and I found the curd to be positively delicious, even though I don't particularly care for the bottle lemon juice in other things. Here's a post about it: https://www.uga.edu/nchfp/papers/2006/06ift-lemoncurd.html and then a link to their recipe: http://www.uga.edu/nchfp/how/can_02/lemon_curd.html. The above recipe is just a variation.